215
FNCA52 TJSJ 050818
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
418 AM AST SAT JUL 5 2025
DISCUSSION
SAHARAN DUST PARTICLES WILL REMAIN IN PLACE TODAY LEADING MOSTLY
HAZY SKIES WITH LIMITED SHOWER ACTIVITY ALONG THE SOUTHERN COASTAL
PLAINS OF PUERTO RICO. FOR TODAY, RH VALUES WILL BRIEFLY DROP IN
THE LOW 50S LEADING SOME POSSIBILITY OF WILDFIRE SPREAD. WINDS
WILL REMAIN FROM THE EAST AT 15 KNOTS OR LESS. SOILS CONDITIONS
ACROSS THE SOUTHERN COASTAL PLAINS REMAIN FAVORABLE FOR FIRE
DANGER CRITERIA. GIVEN THE EXPECTED CONDITIONS THE FIRE DANGER
THREAT WILL REMAIN MODERATE FOR TODAY.
PRZ014-060830-
SOUTHEAST COASTAL PLAINS-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 30 10 0
TEMP (24H TREND) 92 (+3) 75 (-3) 91
RH % (24H TREND) 53 (-6) 87 (+6) 43
WIND 20FT/EARLY(MPH) SE 16 G21 E 13 G17 E 19 G25
WIND 20FT/LATE(MPH) SE 16 G21 E 13 G17 E 19 G25
MIXING HGT(FT-AGL/MSL)4400 5120
TRANSPORT WND (MPH) E 17 E 16
VENT RATE (KT-FT) 66000 71680
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-060830-
SOUTHERN HILLS-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 10
TEMP (24H TREND) 88 (+3) 71 (-4) 87
RH % (24H TREND) 62 (-7) 96 (+6) 58
WIND 20FT/EARLY(MPH) SE 12 E 11 E 14
WIND 20FT/LATE(MPH) SE 12 E 11 E 14
MIXING HGT(FT-AGL/MSL)5040 5530
TRANSPORT WND (MPH) E 16 E 14
VENT RATE (KT-FT) 70560 66360
DISPERSION 5 5
DSI 5 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-060830-
NORTH COASTAL PLAINS-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 10
TEMP (24H TREND) 90 (+2) 75 (-3) 88
RH % (24H TREND) 65 (-5) 95 (+4) 63
WIND 20FT/EARLY(MPH) E 16 G19 E 11 E 19 G22
WIND 20FT/LATE(MPH) E 16 G19 E 11 E 19 G22
MIXING HGT(FT-AGL/MSL)4800 5120
TRANSPORT WND (MPH) E 15 E 15
VENT RATE (KT-FT) 62400 66560
DISPERSION 5 5
DSI 5 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-060830-
NORTHERN HILLS-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20
TEMP (24H TREND) 88 (+1) 71 (-4) 86
RH % (24H TREND) 66 (-3) 98 (+5) 66
WIND 20FT/EARLY(MPH) E 13 E 10 NE 17
WIND 20FT/LATE(MPH) E 13 E 10 NE 17
MIXING HGT(FT-AGL/MSL)5330 5700
TRANSPORT WND (MPH) E 13 E 13
VENT RATE (KT-FT) 58630 62700
DISPERSION 5 5
DSI 5 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-060830-
WEST COAST-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 50
TEMP (24H TREND) 92 (+2) 72 (-2) 91
RH % (24H TREND) 60 (-5) 99 (+4) 59
WIND 20FT/EARLY(MPH) E 14 E 12 SE 13
WIND 20FT/LATE(MPH) E 14 E 12 SE 13
MIXING HGT(FT-AGL/MSL)4250 4880
TRANSPORT WND (MPH) SE 12 E 8
VENT RATE (KT-FT) 42500 34160
DISPERSION 5 5
DSI 5 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-060830-
EASTERN INTERIOR-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 20
TEMP (24H TREND) 89 (+3) 73 (-3) 87
RH % (24H TREND) 64 (-6) 93 (+2) 60
WIND 20FT/EARLY(MPH) SE 14 E 12 E 12
WIND 20FT/LATE(MPH) SE 14 E 12 E 12
MIXING HGT(FT-AGL/MSL)5170 5620
TRANSPORT WND (MPH) SE 16 E 14
VENT RATE (KT-FT) 72380 67440
DISPERSION 5 5
DSI 5 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-060830-
LUQUILLO MOUNTAIN RANGE-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 20
TEMP (24H TREND) 84 (+3) 70 (-3) 83
RH % (24H TREND) 72 (-9) 100 (+3) 68
WIND 20FT/EARLY(MPH) SE 13 E 10 E 11
WIND 20FT/LATE(MPH) SE 13 E 10 E 11
MIXING HGT(FT-AGL/MSL)4150 4720
TRANSPORT WND (MPH) E 17 E 15
VENT RATE (KT-FT) 62250 61360
DISPERSION 5 5
DSI 5 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-060830-
CENTRAL MOUNTAIN RANGE-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 30
TEMP (24H TREND) 87 (+4) 68 (-4) 86
RH % (24H TREND) 65 (-6) 99 (+4) 65
WIND 20FT/EARLY(MPH) SE 10 E 6 E 11
WIND 20FT/LATE(MPH) SE 10 E 6 E 11
MIXING HGT(FT-AGL/MSL)5940 6810
TRANSPORT WND (MPH) SE 13 E 9
VENT RATE (KT-FT) 65340 54480
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-060830-
CAYEY MOUNTAIN RANGE-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 20
TEMP (24H TREND) 84 (+2) 71 (-2) 83
RH % (24H TREND) 72 (-3) 99 (+2) 66
WIND 20FT/EARLY(MPH) E 12 E 9 E 11
WIND 20FT/LATE(MPH) E 12 E 9 E 11
MIXING HGT(FT-AGL/MSL)4480 5120
TRANSPORT WND (MPH) E 16 E 16
VENT RATE (KT-FT) 62720 71680
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-060830-
VIEQUES-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20
TEMP (24H TREND) 90 (+2) 77 (-1) 88
RH % (24H TREND) 60 (-8) 84 (-5) 58
WIND 20FT/EARLY(MPH) E 17 G21 E 14 G18 E 13
WIND 20FT/LATE(MPH) E 17 G21 E 14 G18 E 13
MIXING HGT(FT-AGL/MSL)2670 4160
TRANSPORT WND (MPH) E 17 E 17
VENT RATE (KT-FT) 40050 62400
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-060830-
CULEBRA-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20
TEMP (24H TREND) 91 (+3) 77 (-1) 88
RH % (24H TREND) 62 (-11) 88 (-4) 61
WIND 20FT/EARLY(MPH) E 17 G22 E 14 G18 E 13
WIND 20FT/LATE(MPH) E 17 G22 E 14 G18 E 13
MIXING HGT(FT-AGL/MSL)2690 4090
TRANSPORT WND (MPH) E 18 E 17
VENT RATE (KT-FT) 43040 61350
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-060830-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER MCLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 40
TEMP (24H TREND) 93 (+3) 75 (-3) 92
RH % (24H TREND) 53 (-3) 92 (+8) 44
WIND 20FT/EARLY(MPH) SE 19 G25 E 17 G21 SE 20 G26
WIND 20FT/LATE(MPH) SE 19 G25 E 17 G21 SE 20 G26
MIXING HGT(FT-AGL/MSL)4780 5110
TRANSPORT WND (MPH) E 20 E 15
VENT RATE (KT-FT) 81260 66430
DISPERSION 5 5
DSI 5 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-060830-
SAINT THOMAS AND SAINT JOHN-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 10
TEMP (24H TREND) 85 (+1) 74 (-4) 86
RH % (24H TREND) 72 (-7) 94 (0) 66
WIND 20FT/EARLY(MPH) E 18 G22 E 16 G20 E 12
WIND 20FT/LATE(MPH) E 18 G22 E 16 G20 E 12
MIXING HGT(FT-AGL/MSL)2890 4120
TRANSPORT WND (MPH) E 18 E 18
VENT RATE (KT-FT) 46240 65920
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-060830-
ST CROIX-
418 AM AST SAT JUL 5 2025
TODAY TONIGHT SUN
CLOUD COVER MCLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 20
TEMP (24H TREND) 90 (+4) 74 (-4) 88
RH % (24H TREND) 62 (-10) 95 (+4) 61
WIND 20FT/EARLY(MPH) E 17 G21 E 14 G18 E 12
WIND 20FT/LATE(MPH) E 17 G21 E 14 G18 E 12
MIXING HGT(FT-AGL/MSL)4000 4520
TRANSPORT WND (MPH) E 21 E 18
VENT RATE (KT-FT) 72000 72320
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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